[FIR] Fix incorrect work of K2 expect-actual matcher when actual is Java

...field, which is fake override.
This was failing in Stdlib with `expect HashMap` + actual typealias to
`java.util.HashMap`.

^KT-63624 Fixed

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/transformers/mpp/FirExpectActualMatchingContextImpl.kt

@@ -437,7 +437,7 @@ class FirExpectActualMatchingContextImpl private constructor(
         get() = asSymbol().rawStatus.hasStableParameterNames
 
     override val CallableSymbolMarker.isJavaField: Boolean
-        get() = this is FirFieldSymbol && fir.isJava
+        get() = this is FirFieldSymbol && this.fir.unwrapFakeOverrides().isJava
 
     override val DeclarationSymbolMarker.annotations: List<AnnotationCallInfo>
         get() = asSymbol().resolvedAnnotationsWithArguments.map(::AnnotationCallInfoImpl)